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Spotlight On: The Importance of Water

Welcome to the first instalment of our “Spotlight On:” Blog Series. In this blog series, we will be delving deeper into certain topics relating to the whole coffee-making process (from picking the beans, to pouring the perfect cup), providing you with easy-to-understand information that isn’t filled with complicated, technical language.

In last week’s blog (read it here), we briefly mentioned the importance of using top quality water when making coffee, and we will be going into more detail about the importance of water in this blog.

Why is water so important in coffee making?

When a cup of coffee tastes acidic, flat, bitter or even vinegary, it can be easy to assume it’s due to the coffee beans, but in fact, most of your cup of coffee is made up of water. So it seems obvious that the quality of the water will affect the quality of your coffee. However, this is often overlooked or simply forgotten about.

Water is more than just a mix of hydrogen and oxygen. There are a number of minerals, organic substances, microbes and even chemicals that are found in it, and all of these can affect the taste of your coffee.


What is hard water, and how does it affect my coffee?

Depending on where you live, your tap water will either be “hard water”, “soft water” or somewhere in between. In short, hard water is water that has high mineral content. Around 60% of the UK is classed as having hard or very hard water, and the South and East of England has the hardest water. Hard water can be problematic. As well as the taste of the coffee being altered, it can also lead to a limescale build up in your coffee machine. Minerals are important in high quality water, but too high a concentration can have a negative impact. The TopBrewer uses water filtered by a Brita Filter, to ensure the best quality water for each cup.

Do I need fresh water?

Yes! Fresh water is essential in making a great cup of coffee, however, most conventional coffee machines use a water boiler to make coffee. Water that is left in a boiler for hours or days (or even weeks, in some cases) loses vital minerals and the end result is sub-par water that leads to a sub-par cup of coffee. Water used in coffee-making should be fresh, and water that has been heated and cooled numerous times will have lost vital minerals and oxygen, which in turn can make the coffee taste bitter and flat.

How hot should my water be?

Another common misconception is that boiling water straight from the kettle should be used to make a cup of coffee, but this is untrue. Boiling water will have a detrimental effect on the coffee, and can lead to it tasting burnt and bitter. The water should be hot, but not boiling.

The TopBrewer flash heats filtered water for each drink. By heating fresh water to brewing temperature for every cup, we allow the water to stay cold until brewing, ensuring a higher concentration of water, a better extraction, and a better cup of coffee.


The next time you go to make your coffee, step away from the tap water and try filtered water instead. The difference in the taste might be a pleasant surprise…

Top Tip: Don’t use water in your coffee that you wouldn’t be willing to drink by itself!


For more information about the TopBrewer, click here

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